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EPIdermis
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Stratum Basale (Melanocytes)
Deepest Layer
DERmis by Basal Membrane
Produces Melanin
Stratum Corneum
Most Superficial Layer
Tough Layer of Dead Cells
Complete Keratinization
(Part with Words On it)
Stratum Granulosum
Middle Layer
"Grainy"
Has Purple-staining keratohyalin granules
(Green Arrow)
Stratum Lucidum - ("
Lucid"
)
2nd Most Superficial Layer
Found ONLY in thick Skin (Palms, Feet)
"Light" - Layer appears translucent (Fresh)
(Black Arrow)
Stratum Spinosum
Numerous Cells 2nd Most Deep Layer
Appear Star-shaped or "Spiny"
Joined at junctions called DESMOSOMES
Kertatin
Protein
Tough Material
Protects Lower Layers
Epidermis
Upper Layer (Divided Into STRATA(UM))
NO Blood Vessels (but nourished by Dermis)
Keratinized Stratified Squamous Epithelium
Melanocytes
Stratum Basale
Produce Melanin (Brown Pigments)
Protects S. Basale From Ultraviolet Light
Everyone Has same amount of MelanOCYTES -
but amount of MelanIN produced varies
Desmosomes
Areas where the cells are joined at microscopic levels
in the Stratum Spinosum
Blue
: Stratum Corneum
Black
: Stratum Lucidum
Green
: Stratum Granulosum
Light Blue
: Stratum Spinosum
Red
: Stratum Basale
Author
Anonymous
ID
5415
Card Set
EPIdermis
Description
integumentary
Updated
2010-01-27T23:50:37Z
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